Sound and shock absorbing machine-support



N. H. ANDERSON.

SOUND AND.SHOCK ABSORBING MACHINE SUPPORT. APPLICATION FILED MAY 16. 1918. RENEWED MAR. 16,1920.

1,356,182. I Patented Oct. 19,1920.

' [72 vemor Witness JVZZSH. flnaferson flzftg sound and shock absorbing devices,

UNITED STATES PATENT OFFICE.

' Mnsnr: ASSIGNMENTS, T0

UNDERWOOD TYPEWRITER COIVIPANY, OF NEW YORK, Y., A CORPORATION OF DELAWARE.

SOUND SHOCK ABSORBING MACHINE-SUPPORT.

Specification of Letters Patent.

Application filed May 16, 1918, Serial No. 234,861. Renewed March 16. 1929. Serial No. 366300.

general, and that are particularly serviceable for sustaining typewriters, calculating ma- V chines, cash registers and similar key actuated machines which it is desirable to have operate; as smoothly and noiselessly as possible. I

An object of the present invention is to simplify and cheapen the manufacture of increase their efliciency as and facilitate their attachment to the machines with which'they are to be used? Figure 1 of the accompanying such supports,

drawings shows a side elevation of a foot whiclifermbodies this invention, attached to a machine frame and fastened by a'clamp to the top of a table ordesk or to the floor. Fig. 2 shows a vertical section of the same. Fig, 3 illustrates,

relation subj ecting the shape of the cushion and its tothe attachmentstud before being ed to the weight of the machine. similar view showing the relation of the parts when sustaining the full weight of the machine and the downward pressure incident to the use of the machine. Fig. 5 shows a horizontal section on the plane indicated by the dotted line 55 on Fig. 2. Fig. 6 shows an elevation looking in the direction of the arrow on Fig. 2.

The attachment stud 10'of the foot has a threaded stem 11 which is adapted to be screwed into a threaded socket 12 in the frame 13 of a writing, calculating, recording or other machine. The head 14 of the attachment stud has a flange 15 and below the flange it is of conoidal form, orcurved inwardly from the flange toward the smaller lower end which is provided with a slot 16 suitable for the application of a screwdriver.

The cushion 17 which is preferably made on a larger scale, a vertical section of the foot'attached to a machine frame, show of yielding rubber, has a central longitudinal opening 18 from bottom to top. The wall of the lower portion of the opening through the cushion is shaped to receive and fit the lower end of the head of the attachment stud, while the wall of the upper portion of this opening is curved outwardly on a radius somewhat less than the radius of the curved part of the head of the attachment stud which it receives. With this construc tion the head of the attachment stud settles down into the opening" in the cushion more or less according to the. weight of the machine, and as'the downward force in creases, due to added weight of the machine or to the operation of the machine, the area of the curved wall of the opening through thekcushion in contact with the curved wall of the head of the stud increases and offers added resistance to this downward force or pressure. It is'preferred to have the curve of .the wall of the stud head and the wall of the openingthrough the cushion so re- Patented Oct. 19, 1920.

lated thatwhen subjected to the full effect of the downward pressure the upper part of the stud does not completely fill the upper part of the opening throughthe cushion. This construction insures a more sensitive seat or delicate balance for the ma chine than if the stud closely fitted the opening through the cushion, and it results in a complete absorption of shockand sound when the machipe is being operated.

The cushion isencased in a metal protecting and attaching shell 19. The upper end 20 of this shell is bent inward over the I flange of the head of the attachment stud,

so that the shell may move up and down Y but cannot drop off the stud when the machine is moved. The lower end 22 of the shell is spun inward over a shoulder on the cushion and above the inwardly bent lower end the shell preferably has an interior annular groove orrecess 21. The yielding cushion when inserted into the shell extends into this groove or recess and is thereby retained in place. Having the stud opening extend completely mits the ready application of a screwdriver to the slot in the head of the stud for screw-- ing it into or out of place, and it also enables the cushion to be contracted sufficiently to be easily inserted into the shell.

through thecushion per- Asleeve 23 of sound and shock absorbing material may be placed upon the stud above the head, if desired.

A holder 24 may be provided for receiving the lower end of the shell of this foot, and this holder may have a flange 25 by which it may be fastened to the top of a desk or table or to' the floor; A screw 26 is threaded through the wall of the holder so that its end may be set against the shoulder on the shell, as shown in Fig. 2. When used with a typewriter two of these holders may be located to receive feet at the front of the machine, and when the screws 26 are loosened the machine is free to be re-- moved from a desk or table.

The invention claimed is;

1. A sound-eliminating and shock-absorbing machine support comprising, in combination, a stud having a body portion terminating at its upper end in a part adapted to be attached to a machine to be supported and at its lower, end in a head of conoidal form relatively large. at the top and small at the bottom, a resilient cushion having an opening therethrough, the upper portion of said opening being also of conoidal form and larger at the top thanat the bottom, to

receive the conoidal portion of said head element, and an integral anas a bearin nular confining-band surrounding said cushion but leaving an exposed bearing portion at the bottom, said band and cushion being provided with mutually interengaging parts when assembled to maintain said cushion in,

place, and said band and stud having mutually interengageable elements capable of permitting limited movement therebetween, but serving to prevent accidental separation of one from the other. i

2. A sound-eliminating and shock-absorbing machine support comprising, in combination, a stud having a body .portion terminating at its upper end in a part adapted to be attached to a machine to be supported and at its lower end in a head of conoidal form relatively large at the top and small at the bottom,- the top of said head being of greater diameter than the adjoining portion of said stud, so as to form a retaining shoulder, a resilient cushion having anopening therethrough, the upper portion of said opening being also of conoidal form and larger at the top than at the bottom, to receive the conoidal portion of said head as a bearing element, and an integral annular confining-band surrounding said cushion but leaving an exposed bearing portion at the bottom, said band and cushion being-provided with mutually interengaging parts when assembled to maintain said cushion in place, and said band having. an inwardly disposed retaining flange of smaller internal diameter than that of the retaining shoulder formed by the top of said head and capable of cooperating therewith to permit limited relative movement between said stud and said band, but serving to prevent accidental separation of one from the other..

3. A sound-eliminating and shook-absorbing machine support comprising, in combination, a stud having a body portion terminating at its upper end in a part adapted to be attached to a machine to be supported and at its lower end in a head of conoidal form relatively large at the top and small at the bottom, a resilient cushion having an opening therethrough, the upper portion of said opening being also of conoidal form and larger at the top than at the bottom, to receive the conoidal portion of said head as a bearing element, and an integral annular confining band surrounding said cushion but leaving an exposed bearing portion at the bottom, said band being provided with an inwardly disposed annular recessed portion and said cushion having an annular enlargement to engage with said recessed portion to normally maintain said band and pressed, the stud, band, and cushionhaving relatively interengageable parts serving to confine said cushion in said band and permit limited relative movement between said band and stud, but preventing accidental separation thereof, a standard adapted to be firmlysecured to a supporting surface, and means for clamping said restraining band securely in said standard.

NILS H. ANDERSON;

cushion in interlocked relation, and said 

